Hummer H2. Manual — part 771

Hydraulic Brake System Bleeding (Pressure) in Hydraulic Brakes.

10. Turn the ignition switch to the RUN position, engine off.

11. Perform the Diagnostic System Check - ABS .

WHEEL SPEED SENSOR REPLACEMENT - FRONT

Removal Procedure

CAUTION: Refer to Brake Dust Caution in Cautions and Notices.

2004 Hummer H2

2004 BRAKES Anti-Lock Brake System - Hummer H2

Fig. 13: Front Wheel Speed Sensor Cable
Courtesy of GENERAL MOTORS CORP.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

2. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.

3. Remove the brake rotor. Refer to Brake Rotor Replacement - Front in Disc Brakes.

4. Remove the WSS cable mounting clip from the knuckle.

2004 Hummer H2

2004 BRAKES Anti-Lock Brake System - Hummer H2

5. Remove the WSS cable mounting clip from the upper control arm.

6. Remove the WSS cable mounting clip from the frame attachment point.

7. Disconnect the WSS cable electrical connector.

Fig. 14: Wheel Hub And Bearing (RWD, 25/35 Series)
Courtesy of GENERAL MOTORS CORP.

8. Remove the wheel speed sensor (WSS) mounting bolt.

NOTE:

Carefully remove the sensor by pulling it straight out of the bore. DO NOT
use a screwdriver, or other device to pry the sensor out of the bore. Prying
will cause the sensor body to break off in the bore.

2004 Hummer H2

2004 BRAKES Anti-Lock Brake System - Hummer H2

9. Remove the wheel speed sensor (5) from the hub/bearing assembly (4).

Installation Procedure

Fig. 15: Wheel Hub And Bearing (RWD, 25/35 Series)
Courtesy of GENERAL MOTORS CORP.

1. Install the WSS (5) into the hub/bearing assembly (4).

2. Install the WSS mounting bolt.

NOTE:

Refer to Fastener Notice in Cautions and Notices.

2004 Hummer H2

2004 BRAKES Anti-Lock Brake System - Hummer H2